If such a large download is problematic for you, proTeXt is also
included in the TeX Collection, which you
can get by becoming a TeX user group
member. On the other hand, if you have plenty of bandwidth and want to
burn your own DVD, you can download proTeXt as a giant ISO
image.

Once you have the distribution, you can start the installation by
running Setup.exe (if it does not open automatically). At
present, proTeXt includes only 32-bit binaries, but runs fine on 64-bit
systems.

Other tools

proTeXt adds the TeXStudio
front end to MiKTeX. If you want to see the exact contents of the
distribution, the .exe file is also a zip file; you can inspect it via
unzip (on any platform).

To use ConTeXt within proTeXt or MiKTeX, you also need to install a
Perl for Windows such as ActivePerl,
and Ruby. (Later
versions than the ones linked to here will most likely work too.) The
contextgarden
wiki has more information on MiKTeX and ConTeXt.

How you can help

Please report problems and suggestions to the (public) protext@tug.org mailing list,
after checking the list of known bugs. Before
posting, please be aware that although email addresses are obscured, the
archives of the mailing list are publicly viewable, so others can learn
from the history.